diff --git a/.travis.yml b/.travis.yml
index 7149d70e8..214c01bbb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,7 +18,7 @@ matrix:
 
 before_install:
     - mv ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/xdebug.ini{,.disabled} || echo "xdebug not available"
-    - composer self-update -q
+    - composer self-update --1 -q
 
 install:
     - COMPOSER_MEMORY_LIMIT=-1 composer update
diff --git a/phpstan.neon b/phpstan.neon
index f43814459..b0d9e96f8 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -36,3 +36,5 @@ services:
 		tags: [phpstan.rules.rule]
 		arguments:
 			forbiddenFunctions: ['d', 'dd', 'dump', 'var_dump', 'extract']
+
+	- Symplify\PackageBuilder\Matcher\ArrayStringAndFnMatcher
\ No newline at end of file